线路中心线 center line of track

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  A . the border flange’s excursion and flection B . the both end shafts line’s accordance C . the border flange’s flection and the both end shafts line’s accordance D . the border flange’s accordance and both end shafts flection degree

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• Laying out a line in successive circles flat on deck with the bitter end in the center is known as（）.

  A . coiling B . faking C . flemishing D . lining

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• Distance along a track line is measured on a Mercator chart by using the （）.

  A、latitude scale near the middle of the track line B、longitude scale near the middle of the track line C、latitude scale at the multitude of the chart D、latitude or longitude scale at the middle of the scale

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• A crankshaft whose center of gravity coincides with its center line is said to be （）.

  A . dynamically balanced B . statically balanced C . counter balanced D . resonantly balanced

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• All straight lines represent great circle tracks on a chart based on a(n) （）.

  A . Mercator projection B . polyconic projection C . orthographic projection D . gnomonic projectio

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• 线路有效长 effective length of track

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• For a floating vessel，the center of buoyancy and the metacenter are in the line of action of the buoyant force（）.

  A . only when there is positive stability B . only when there is negative stability C . only when there is neutral stability D . at all time

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• The center of buoyancy and the metacenter are in the line of action of the buoyant force（）.

  A . only when there is positive stability B . only when there is negative stability C . only when there is neutral stability D . at all time

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• A crankshaft whose center of gravity coincides with its center line is said to be（） Ⅰ.statically balanced Ⅱ.dynamically balanced

  A . Ⅰ only B . Ⅱ only C . both Ⅰ and Ⅱ D . neither Ⅰ nor Ⅱ

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• 线路终端连接 connection at ends of tracks

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• What is NOT an advantage of the rhumb line track over a great circle track? （）

  A . Easily plotted on a Mercator chart B . Negligible increase in distance on east-west courses near the equator C . Does not require constant course changes D . Plots as a straight line on Lambert conformal chart

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• （）is the main center-line structural member，running fore and aft along the bottom of a ship，sometimes referred to as the backbone.

  A . Frame B . Deckbeam C . Stringer D . Keel

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• 线路别疏解 untwine of main line

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• Except for N-S courses，and E-W courses on the equator，a great circle track between two points，when compared to a rhumb line track between the same two points，will（）.

  A . always be nearer to the equator B . always be nearer to the elevated pole C . be nearer to the pole in the Northern Hemisphere and nearer to the equator in the Southern Hemisphere D . be nearer to the pole or the equator depending on the latitudes of the arrival and departure positio

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• 44. All straight lines represent great circle tracks on a chart based on a（n）______.

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• 原文:欢迎参观开罗国际会议中心。该会议中心是中国政府赠送给埃及政府的礼物,是中埃两国人民友好的象征。译文:Welcome to _______. The conference center is a gift to the Egyptian government from the government of China. It is a symbol of friendship between ______________.

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• 113. Distance along a track line is measured on a Mercator chart by using the ________.

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• Traditionally， large shippers build factories andwarehouses near rail lines and have a section of track on their property calleda（）where goods are loaded on to or unloaded from railcars.

  A．channel B．road C．siding D．aisle

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• The phrase tracking down in line 65 is closest in meaning to ______. (Text 3A)

  A:taking apart; B:classifying; C:searching for; D:isolating

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• 6、直齿轮的特点是轮齿的齿顶线与轴的中心线方向是平行的，可翻译为：The addendum line of spur gear is parallel to that of shaft centerline, which is the dominant feature of spur gear.

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